Hindrik Harmannus Arnoldus "Henk" Grol is a Dutch judoka. Grol competed in the 2007 European Judo Championships in Belgrade, Serbia in the men's under 90 kg, as a replacement for Mark Huizinga, who cancelled last minute due to personal problems. He won gold in the men's under 100-kilo class at the 2008 European Judo Championships in Lisbon, Portugal. He was the youngest European Champion of that year, only 22 years old. After a highly competitive race against Elco van der Geest, Grol ended up to be the 2008 representative for the men's 100 kg category for the Netherlands at the 2008 Olympics in Beijing. There he reached the semifinals, where he was beaten by Askhat Zhitkeyev from Kazakhstan. He went on to win bronze. 

April 14th, 1985 in Veendam (Age 39) as Hindrik Harmannus Arnoldus Grol